DAILY FIQH
Question: What Dua should one read after the Fardh Salaah?
Answer: Dua after Fardh Salaah is Mustahab (recommended). It may be read loudly, however, it is better to read it softly.
Thouban Radiyallahu Anhu narrates: When the Messenger of Allah Sallallahu Alahi Wasallam used to complete his Salaah, he would say Astagfirullah three times and then he would recite:
اللَّهُمَّ أَنْتَ السَّلامُ ، ومِنكَ السَّلامُ ، تباركْتَ يَاذا الجلالِ والإكرام
"O Allah, You are peace and all peace is from you. You are blessed, O possessor of might and honour.” [Muslim- Kitabul Adkaar]
Besides the above Dua, one may recite any Dua narrated in the Ahadith. After the Fardh of Dhuhr, Magrib & Esha) one should read Dua only for a short while and proceed to complete the Sunnan Salaah. Thereafter one may recite all other lengthy Duas and Azkaar.
After Fajr and Asr, one may read the Tasbihaate-Fatimee and other long Duas and Azkaars, etc. {Shami vol. 1 pg. 530)
AND ALLAH KNOWS BEST
Yusuf Moosagie